This one is new for me, the body and eye features resemble a lot the previous stratiomyidae very near these, but the yellow collar is different, not sure if different species, male female, or young adult difference.
This image is a stack of 3 shoots with Canon MP-E 65mm @ 5x and f/5, I discarded some in focus parts in the eye to avoid out of focus rings, but keep the mouthpart wich is a important feature of this family of flies.
Stratiomyidae portrait by Gustavo Mazzarollo, on Flickr
A view of the body with the halteres included
Stratiomyidae body view by Gustavo Mazzarollo, on Flickr
Photos of the other individuals found nearby, different species, gender or age ?
Stratiomyidae by Gustavo Mazzarollo, on Flickr